Nursing-bottle designed for use with rubber nipples.



S. A. JONES. NURSING BOTTLE DESIGNED FOR USE WITH RUBBER NIPPLES.

APPLICATION FILED JUNE 22, 1911.

Patented Nov. 24, 1914.

SAMUEL AUGUSTUS JONES, OF WASHINGTON, DISTRICT OF COLUMBIA.

NURSING-BOTTLE DESIGNED FOR USE WITH RUBBER NIPPLES.

Specification of Letters Patent.

Patented Nov. 24, 31914.

Application filed June 22, 1911. Serial No. 634,671.

.To all whom it may concern:

Be it known that I, SAMUEL AUGUs'rUs Jones, a citizen of the United States, residing at Vashington, in the District of Columbia, have invented certain new and useful Improvements in Nursing-Bottles Designed for Use with Rubber Nipples, of which the following is a specification.

My invention relates to an improvement in glass nursing bottles from which the contents are withdrawn through a rubber nipple fitting over the top and neck of the bottle, the improvement consisting in providing a minute duct or passageway of uniformcross sectional area whereby'air is admitted in sufficient quantity to replace the contents withdrawn by suction through the opening provided in the nipple. v

The essential and peculiar feature which distinguishes my improvement from other devices of a similar nature lies in'restricting the cross sectional area"'ofthe duct-or pas-' sage along its entire length, and extending it for a considerable distance under the confining surface of the nipple. The result obtained by this construction and arrangement is to set up, in the said duct or passage, a suflicient amount of frictional resistance between the contained liquid and the walls of the passage, to neutralize the interior pressure or weight of liquid tending to cause leakage.

The invention is illustrated in the accompanying drawings in which- 'gure 1 shows the neck, flange and mouth of a nursing bottle A with a minute groove C of uniform cross section which passes from the mouth or openin of the bottle on the surface of the body an side of the flange and downward on theouter surface of the neck about & inch, so as to be below the lower margin of the body of an applied rubber nipple. Fig. flshows a sectional view of the upper part of the nursing bottle A indicating the course of the groove C on the outside surface of the flange and neck. Fig.

3 is the same as Fig. 1 except that it shows a rubber nipple B applied, converting the groove G into a minute tube. Fig. 4' shows a sectional view similar in all res ects to Fig. 2 except for the addition of mpple B showing the conversion of the groove C into a tube.

Referring to the drawings A is the neck of an ordinarynursing bottle and B the rubber cap or nipple formed to be fitted thereover and to closely embrace its surface.

C is a duct or passageway formed in the upper face and side of the neck A. This groove is of a very restricted cross sectional area and is of the same size along its entire length, and follows the contour of the surface of the bottle in such manner that when. the rubber nipple is applied a continuous tube will be formed leading under the surface of said nipple and from the outside air to the interior of said bottle.

I have found that a duct formed as above will admit sufiicient air to equalize the pressure set up when the contents of the bottle are removedby suction, as when a child is nursing, and that the frictional resistance exerted between the walls of the duct and the contained liquid will prevent leakage under varying pressure conditions and in any posit. tibn of the bottle. The duct should not be larger than one-fiftieth of an inch in width and depth to secure reliable results, and it should extend about three quarters'ofan inch along the face of the bottle neck up'to and over the flange, continuing along its entire 'course of the same width, depth and consequent sectional area. The continuation of the groove from the opening of the bottle to the. upper and outer edge of the flange. is necessary to prevent the rubber nipplefrom collapsing down at that point andblocking the upper end of the duct. A'duct formed in this manner will permit suflic'ien'l; air-1m enter the bottle and will not permit the'outflow of the contained liquid. 1' v I am aware that various devices including grooves have been used in connection with nursing bottles for the purpose of restoring the pressure equilibrium and do not cla m this broadly as my invention. I

What I claim and desire to secure as Letters Patent is: l

In combination with a nursing bottle and a rubber nipple therefor, 11 small groove, of

uniform dimensions throughout, passing up- Q 121,11 twee ward in the outer surface of the meek and In testimony whereof K afilx my signature ever the flange to the mouth or opening, in presence of two witnesses.

forming with the applied body of the nipple SAMUEL AUGUSTUS JONES. e small calibered, crookeol and relatively Witnesses: long duct or passage connecting the cavity C. A. BAKER,

of the nipple and bottle with the outer air. I B. SAMUEL DUNN. 

